名词中文翻译
中文翻译：化学踪迹
同义词：
['chemical footprint', 'chemical residue']
例句：
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1. The scientist found a chemical trail leading to the laboratory.
科学家发现了一条通往实验室的化学踪迹。
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2. The police were able to follow the chemical trail to the source of the pollution.
警方能够追踪到污染源的化学踪迹。
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3. The scientists used this chemical trail to trace the origins of the virus.
科学家们利用这条化学踪迹来追踪病毒的起源。